Samuel d



v s. 1). LOVE. WATER SUPPLY SYSTEM.

(No Model.)

INVENTOR BY m Patented Feb. 6, 1894.

WITNESSES: l

ATTORNEYJ coll-m1.

NITED STATES PATENT Genres.

SAMUEL D. LOVE, OF NE\V YORK, N. Y.

WATER-SUPPLY SYSTEM.

SPECIFICATION forming part of Letters Patent No. 514,090, dated February 6, 1894.

Application filed October 9,1 893.

T0 ctZZ whom it may concern:

Be it known that I, SAMUEL D. LOVE, a resident of the city, county, and State of New York, have invented new-and useful Improvements in ater-Supply Systems, of which the following is a specification.

My invention relates to water supply systems and has for its object to maintain a constant pressure throughout the service pipes of large buildings or other elevated structures without the use of tanks or other reservoirs on top of such structures.

To this end my invention consists in the mechanism described and illustrated in the accompanying drawings, forming part hereof and more particularly pointed out in the claims.

In the drawings-Figure 1 is a diagrammatic view of my improved system; and Fig. 2 and 3 are sectional elevations of details to be hereinafter described.

a is a supply pipe which brings water from the main in the street to the pump 1). The pump is a steam pump of any ordinary construction supplied with steam through the pipe e and regulated by the throttle e'.

c is a pipe extending from the pump throughout the structure to be supplied with water, and represents the service pipe or suitable stand pipe.

In the steam pipe 6 I place a suitable valve h to cut of" the steam to stop the working of the pump, as it will be hereinafter described.

Communicating with the service pipe 0 and preferably mounted thereon I place a controlling device 9 for the valve h. In Fig. 2 this controlling device 9 is shown in section and consists of a cylinder g communicating with the interior of the service pipe, and adapted to receive water therefrom. In this cylinder works a piston 9 having a stem g surrounded by a spring 9 which, bearing against the pis ton and the head of the cylinder, serves to keep the piston pressed forward in the cylinder. Surrounding the cylinder 9 is a casing g insulated from the pipe 0, and carrying thereon a circuit terminal 9 and a contact screw g The valve 71 is represented in section in Fig. 8, and consists of an ordinary gate valve it carried by a stem h? and held up out of the way 71 by the spring 7L4. Supported in prox- Serial No. 487,568. (No model.)

imity to the valve stem are magnets 7&5 whose armature h is attached to the valve stem 72/ From the circuit terminal g of the controlling device 9 a wire 1 extends to the battery f. Connected to the cylinder g is the wire 2 which passes through the casing g and is insulated therefrom, and extends to the magnets if. The wire 3 connects the magnets in with the battery f.

The operation of the system is as follows: The valve 2' being supposed to be open and the pump in operation, the water will go through the pipe (6 to the pump and be supplied to the building through the service pipe 0. As long as the water is allowed to flow freely, the piston will be held firmly in the position shown in Fig. 2 by the spring g As soon as" the water is shut off in the pipe c,we will suppose at the point e, the flow through the pipe 0 will stop and the piston of the pump in moving will now cause a higher pressure of the water in the pipe which will have the eifect of forcing the piston g backin its cylinder against the tension of the spring g As soon as the piston g is moved. far enough to allow its end 9 to make contact with the contact screw 9 the circuit will be completed through the battery wire 1, binding-post g casing g, contact screw g stem of the piston 9*, cylinder 9 wire 2, magnets h, by wire 3, back to the battery. The magnets h will now attract their armature la and close the valve against the tension of the spring 7t. This will have the effect of shutting off steam from the pump which will then stop working. As soon as the flow of water is again established in the pipe 0 by opening the cock 0' or otherwise, the pressure on the piston will be relieved and the spring will force the piston forward, and will break the circuit at y As soon as the circuit is broken, the magnets will no longer attract their armature and the spring It will immediately lift the valve and allow steam to be admitted to the pump, which will then be operated to keep up the pressure to supply the building as before.

It may happen that for some cause the pressure in the pipe ois not maintained high enough, when the water has been shut off in the building as described, to maintain the piston 9 against the pressure of the spring 9 but this will be of no consequence since, as soon as the piston moves far enough forward to break the circuit, the pump will immediately get up the pressure and force out the piston, completing the circuit again, which will stop the pump as before. This will happen as often as the parts g and 9 become separated while the water in the service pipe is not flowing and the pressure will at all times be maintained. It will be seen that by providing an automatic means for controlling the pump by the pressure of the water in the service pipe, I succeed in entirely dispensing with tanks in elevated positions to feed the service pipes, thus obviating all the obj ectionable features of such tanks.

I do not limit myself to the construction described and shown herein nor to any specific devices for accomplishing the same purposes as itis obvious that the devices maybe greatly varied without departing from the spirit of my invention, but

What I claim, and desire to secure by Lette'rs Patent, is-

1. In a system of water distribution, the combination of a steam pump feeding a service pipe, an electro-magnetic valve for controlling the supply of steam to the pump, a pressure operated circuit closer controlling the circuit of the electro-magnetic valve, communicating with the service pipe, whereby the electromagnetic valve may be controlled by the water pressure in the service pipe, substantially as described.

2. In a system of water distribution, the combination of a steam pump feeding a service pipe, an electromagnetic valve for controlling the supply of steam to the pump, a pressure operated circuit closer in circuit therewith, communicating with the service pipe,whereby the electro-magnetic valve may be controlled by the water pressure in the service pipe, substantially as described.

3. In a system of water distribution the combination of a steam pump feeding a service pipe, an electro-magnetic valve for controlling the supply of steam to the pump, a casing, in electrical circuit with the steam valve, mounted on the service pipe but insulated therefrom, a cylinder covered by said casing and in electrical circuit with the steam valve, communicating with theinterior of the service pipe and adapted to receive water therefrom, a spring pressed piston in said cylinder, a piston rod extending therefrom adapted to make contact with the casing, all arranged so that a predetermined movement of the piston will energize the electro-magnet of the steam valve, substantially as shown and described.

SAMUEL D. LOVE.

Witnesses:

HARRY M. TURK, CHAS. E. SMITH. 

